The Women's Capilene 1 Silkweight Stretch Tank by Patagonia is light as a cirrus cloud, yet built for the heavy work of steep hill climbs, sun-drenched trail runs and summer canyoneering. This is Patagonia's stretchiest baselayer, made to keep you dry and moving freely during active pursuits. The 84% polyester/16% spandex fabric provides 50+ UPF sun protection and has Gladiodor odor control for the garment. It wicks perspiration and rests lightly on the skin, allowing a cooling airflow. Wide straps accommodate sports bras, offset seams feel smooth under pack straps, and reflective logos on the front and center-back add visibility to predawn runs. Recyclable through the Common Threads Recycling Program.